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The analytic continuation by duality (ACD) technique has been used to estimate the electroweak S parameter in technicolor models. In this letter, we investigate the reliability of this method by applying it to some toy models with known…

High Energy Physics - Phenomenology · Physics 2009-10-30 S. R. Ignjatovic , L. C. R. Wijewardhana , T. Takeuchi

We study the oblique corrections to the electroweak interaction in the holographic model of technicolor theories. The oblique S parameter is expressed in terms of a solution to the equations of motion for the AdS bulk gauge fields. By…

High Energy Physics - Phenomenology · Physics 2009-11-11 Deog Ki Hong , Ho-Ung Yee

The method of analytical continuation from imaginary to real chemical potential is tested in 2-color QCD. In comparison to previous studies in the same theory, an exact updating algorithm is used and simulations are performed closer to the…

High Energy Physics - Lattice · Physics 2009-09-29 P. Cea , L. Cosmai , M. D'Elia , A. Papa

Vacuum characteristics quantifying dynamical tendency toward self-duality in gauge theories could be used to judge the relevance of classical solutions or the viability of classically motivated vacuum models. Here we decompose the field…

High Energy Physics - Lattice · Physics 2015-05-30 Andrei Alexandru , Ivan Horvath

For an effective AdS theory, we present a simple prescription to compute the renormalization of its dual boundary field theory. In particular, we define anomalous dimension holographically as the dependence of the wave-function…

High Energy Physics - Theory · Physics 2015-05-28 JiJi Fan

Two-color finite density QCD is free from the sign problem, and it is thus regarded as a good model to check the validity of the analytic continuation method. We study the method in terms of the corresponding chiral random matrix model. It…

High Energy Physics - Lattice · Physics 2009-03-06 Yasuhiko Shinno , Hiroshi Yoneyama

We study the issue of duality violations in the VV-AA vacuum polarization function in the chiral limit. This is done with the help of a model with an expansion in inverse powers of the number of colors, Nc, allowing us to consider…

High Energy Physics - Phenomenology · Physics 2009-11-11 O. Cata , M. Golterman , S. Peris

A technique called analytic perturbation theory, which respects the required analytic properties, consistent with causality, is applied to the definition of the running coupling in the timelike region, to the description of inclusive…

High Energy Physics - Phenomenology · Physics 2007-05-23 K. A. Milton , I. L. Solovtsov , O. P. Solovtsova

Recent progress in calculations of QED radiative corrections to parity nonconservation in atoms is reviewed. The QED vacuum polarization, the self-energy corrections and the vertex corrections are shown to be described very reliably by…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. Yu. Kuchiev , V. V. Flambaum

This paper describes an approach used to generate new translations using raw bilingual dictionaries as part of the 4th Task Inference Across Dictionaries (TIAD 2021) shared task. We propose Augmented Cycle Density (ACD) as a framework that…

Computation and Language · Computer Science 2021-08-31 Shashwat Goel , Kunwar Shaanjeet Singh Grover

A posteriori error estimates are an important tool to bound discretization errors in terms of computable quantities avoiding regularity conditions that are often difficult to establish. For non-linear and non-differentiable problems,…

Numerical Analysis · Mathematics 2024-06-12 Sören Bartels , Alex Kaltenbach

A numerical estimative error of the magnitude of the vacuum polarization effect due to electron-positron by a factor of $10^3$ in [PRL97(2006)100403; 269901(E)] invalidates the study carried in this work in its present context.

High Energy Physics - Phenomenology · Physics 2007-07-03 J. Dias de Deus , P. Castelo Ferreira , J. Tito Mendonca

We show that a novel rectification phenomena is possible for overdamped particles interacting with a 2D periodic substrate and driven with a longitudinal DC drive and a circular AC drive. As a function of DC amplitude, the longitudinal…

Statistical Mechanics · Physics 2009-11-07 C. Reichhardt , C. J. Olson , M. B. Hastings

The renormalization group method enables one to improve the properties of the QCD perturbative power series in the ultraviolet region. However, it ultimately leads to the unphysical singularities of observables in the infrared domain. The…

High Energy Physics - Phenomenology · Physics 2008-11-26 D. V. Shirkov , I. L. Solovtsov

In these lectures we give a concise introduction to the ideas of renormalon calculus in QED and QCD. We focus in particular on the example of the Adler D function of vacuum polarization, and on relations between perturbative renormalon…

High Energy Physics - Phenomenology · Physics 2011-03-28 C. J. Maxwell

In this work, we present the first derivation and implementation of analytic gradient methods for the computation of the atomic axial tensors (AATs) required for simulations of vibrational circular dichroism (VCD) spectra using…

Chemical Physics · Physics 2025-11-03 Brendan M. Shumberger , T. Daniel Crawford

A pump-probe atomic parity violation (APV) experiment performed in a longitudinal electric field, provides a signal breaking mirror symmetry while preserving the cylindrical symmetry of the set-up. The excited vapor acts on the probe beam…

Atomic Physics · Physics 2009-11-10 M-A. Bouchiat , J. Guéna , M. Lintz

In $1/N_c$ expansion, analyticity and crossing lead to crossing even and odd ($C=\pm 1$) vacuum exchanges at high-energy, the {\em Pomeron} and the {\em Odderon}. We discuss how, using {\em String/Gauge duality}, these can be identified…

High Energy Physics - Phenomenology · Physics 2008-12-10 Richard C. Brower , Marko Djuric , Chung-I Tan

We develop an efficient method for computing thermal partition functions of weakly coupled scalar fields in AdS. We consider quartic contact interactions and show how to evaluate the relevant two-loop vacuum diagrams without performing any…

High Energy Physics - Theory · Physics 2020-12-02 Per Kraus , Stathis Megas , Allic Sivaramakrishnan

We compute the one loop vacuum polarization from massless, minimally coupled scalar QED in a locally de Sitter background. Gauge invariance is maintained through the use of dimensional regularization, whereas conformal invariance is…

General Relativity and Quantum Cosmology · Physics 2009-11-07 T. Prokopec , O. Tornkvist , R. P. Woodard
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